mckissick



(No Model.)

G. M. MGKISSIGK.

SPARK ARRESTER.

Patented Oct. 14, 1884.

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Unirse lll PATENT 'rrionG SPARKARRESTER.

SPECIFICATION forming part of Letters Patent Nm 306,415, dated October 14, 1884.

Application filed May 19, 1884. (No model.)

.To all whom it may concern.-

Be it known that I, GEORGE M. McKissick, a citizen of the United States, residing at Butler, in the county of Bates and State of Missouri, have invented certain new and useful Improvements in Spark-Arresters, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to that class of sparkarresters which comprise-as elements of their construction reticulated screens placed in the path of the products of combustion, soas to impede or prevent ,the progress of sparks through the smoke-stack of locomotives or other engine-boilers and the invention consists in certain features of construction hereinafter described, and specifically sct forth in the claims.

Referring .to the drawing, which is a cenp tral vertical section of a portion of a smokestack providedl with my invention, A represents the upper portion of an uptake; B, a

' chamber or enlargement thereof, having a contracted top, C, and an outlet, C. A portion of the wall of the chamber B is removed, and a sliding door, B, is provided, which runs in grooves formed by vertical flanges B2 and the wall of the chamber at the upper and lower portion thereof.

` B3 represents a handle secured to the door for the purpose of operating the same.

y A hinged door may be substituted for the sliding door, if desired, the object being to provide access to the interior of the chamber for cleaning or repairing the same When neccssary.

At or about the center of the chamber, and also at or near its top, are secured hoops D and D', respectively, by brazing, bolting, or riveting, as desired, which hoops serve as the binding of or the means of securing inverted cones E and E', respectively, the apices E:i of which4 consist of nonreticulated material-such as sheet metal-the ex treme points of which are removed so as to provide communication from one cone to the other, for a purpose hereinafter described. By means of straps F, secured to the top, an inverted nonperforated metallic cone, G, is supported concentrically within the reticulated cone E', and below the outlet Ez of the lower reticulated cone, E', is supported by means of strap H a downwardly-convexed pan, I. From the top of the uptake there rises an annular reticulated collar, J, which may be bound by a metallic binding, J, for the purpose of giving it additional strength and a inished appearance.

It will be noticed that the inverted reticulated cones E E2 extend completely across the compartment, leaving no passage forthe'pro; ducts of combustion except through the meshes of the screens, or, possibly, to an exceedingly limited extent, the passage of accidental indirect currents through the openings in their apices.

The operation of the invention is as follows: The products of combustion are first obstructed in a measure by the downwardlyconvexed pan l, which acts to deflect the coarser cinders or sparks against the reticulated collar J, from which they fall down the uptake, or may be again carried by the draft upwardly over the collar J, passing at the side of the pan I, when they (the cinders and sparks) again come in contact with the outwardlydnclined surface of the lower cone, E, and are diverted against the walls and conical bottom Bf of the enlargement orly chamber B, when they fall and restnpon said bottom and against the reticulated collar. This being the disposition of the coarser sparks, the cinders and ner portions pass through the meshes of the lower cone, and are gathered in the apices thereof, either before or after coming in contact with the inclined surface of the upper cone, and so in regard to the still finer particles of the products of combustion, which pass into the upper core and are collected, :and

.then fall through the opening of said cone into the lower, a portion being carried upwardly and deilected so as to fall within the :non-reticulated cone G. As the products of combustion which are free from sparks and cinders pass unobstructed through the outlet C', the heat thereof serves to further consume and reduce to ashes the cinders collected in the pan I outside of the collar J, and within the apices of the two cones, and within the suspended cone G, so that there is a continual process of reduction by heat of all the cinders gathered to a iineness which permits of their passage through the cones and ultimate es- ICO cape after having been consumed, so that practically no live sparks can escape from the stack.

In constructing the cones they may be made of any suitable wire-cloth, or Woven rods of suitable size and mesh, each being like .the other in finenesslor not, as I do not wish to .confine my invention to cones of any particular mesh, but consider the close connection of the base of a series of cones with thewalls of the uptake and the combination of such cones with the accessories hereinbefore described as being eomprehended by my invention, and I may alter or varythe construction herein shown to any extent and in any degree within the skil1\ of persons conversant in the construction of spark-arresters.

Having described my invention and its operation, What I claim is 1. The combinati0n,with a series of inverted cones `extending from wall to wall of the uptake', of a reticulate collar and a downwardlyconveXed centrally-suspended pan, substantially as specified.

2.l The combination oi' a series of inverted cones extending from wall to Wall, as described, and having' non reticulated open apices, with an upper concentric non-reticulated .cone and a lower concentrically-suspended downwardly-convexed pan, substan-l tially as specified.

' 3. The combination ofthe uptake A, having the enlarged compartment B,`pr0vided with the iiangedbottom B4, and the `door B', With the inverted cones E E',extended and secured to thewalls of the compartment B, and pro- 35 vided with the non-reticulated open apices E2 E3, the depending conveXed pan I, and reticulated collar J, substantially as shown and described.

4. The combination of the uptake A, having 4o the enlarged compartment B, with inclined top and bottom, the inverted reticulated cones secured to the wall, as described, the suspended non-reticulated cone G, straps F, the pan I, straps H, andv collar J substan- 45 tially as shown and described.

In testimony whereof I aiiix my signature in presence of two witnesses.

GEORGE M. MGKISSICK.

W'itnesses:

P. H. lEIoLooMB, T. W. SILvnRs. 

